While leaning out a window that is 6.4 m above the ground, you drop a 0.60 Determine the following. basketball to a friend at ground level. Your friend catches the ball at a height of 2.0 m above the ground. (a) the amount of work done (in J) by the force of gravity on the ball (b) the gravitational potential energy (in ) of the ball-earth system, relative to the ground when it is released (c) the gravitational potential energy (in J) of the ball-earth system, relative to the ground when it is caught
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- Calculate the minimum amount of work needed to move a 400 kg rocket from Earth's surface to the International Space Station in orbit 300,000 m above Earths surface. Solve for the minimum amount of work needed to move the payload to the ISS. Start with general equations and explain what you are doing and why you did what you did. Evaluate your solution. Describe how you evaluated your answer and whether or not you think your answer is reasonable.A ball is launched directly upwards from the ground. At max height, the ball has a gravitational potential energy of 200 J. If the ball the ball has a mass of 4 kg, then what was the initial velocity of the ball? Report your answer in units of meters per second (m/s) but only write down the number part.A 20 N ball is thrown upward with an initial kinetic energy of 100 J. How much gravitational potential energy will the ball have when it reaches the top of its path? 2000 J 100 J 50 J 5 J Which is correct?
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